Lubricator for steam-boilers



Patented Feb. l4, I899.

J. DESMOND.

LUBRICATOR FOR STEAM BOILERS.

(Application filed Jan. 15, 1898.)

' (No Model.)

awvewkoz- THE NORRIS VETERS 50., PHOTOJJTHOY. wliHNGTON, 0. C4

NITED S STATES PATENT OFFICE.

JOHN DESMOND, OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF, SEBASTIAN SANDER,AND GEORGE E. HAFFNER, OF SAME PLACE.

STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 619,677, dated February14, 1899.

Application filed January 15, 1898.

TO all whom it may concern:

Be it known that I, JOHN DEsMOND, of New York, in the county of NewYorkand State of New York,have invented certain new and useful Improvementsin Lubricators for Steam- Boilers; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention contemplates certain new and useful improvements inlubricators for steam-boilers.

The object of the invention is to provide improved means for feeding orsupplying a lubricant to the interior of a boiler. This I accomplish bycombining an injector and lubricator, the latter having itsdischarge-outlet opening into one of the chambers of the former, so thatthe oil will be entrained by the jet of combined steam and Water andthus fed to the boiler. The lubricator is provided with sight-openingsand suitable means for regulating the discharge of the lubricant. Theinjector is specially designed for this purpose. The combining-tube ismade up of a series of sections, forming intermediate spill-openings,through any of which the oil may be taken up by the jet, thus insuringthe feeding of the lubricant under various pressures of steam.

The invention will be hereinafter fully set forth, and particularlypointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical longitudinalsectional view of the combined injector and lubricator. Fig. 2 is a topplan view of the lubricator. Fig. 3 is a cross-sectional view of theconnection between the lubricator and injector.

Referring to the drawings, A designates an injector, and B a lubricator.The injector is provided with a shell or casing to and the ordinaryinlets for steam and water a a respectively, an outlet to the boiler aand an outlet a for the overflow. This overflow is through asupplemental casing a having an interiorly-threaded opening which fitson a threaded boss of of easing a. A valve I) normally closes thepassage of the overflow. This valve is fitted on an arm I), pivoted atits up- Serial No. 666,799. (No man.)

per end at b and formed with a weight b which tends to normally hold thevalve to its seat. The casing a is provided, preferably, at about thecenter of the vacuum-chamber with an interiorly-threadednipple acommunicating directly with said chamber.

The injector is provided with suitable steam, lifting, and deliverytubes, which may be of any preferred form of construction. Thecombining-tube C is made up of a series of sections d d 61 formed withcoincident openings, each having a gradual conical taper'toward thedelivery-tube,preserving the conical bore requisite in combining-tubesof steaminjectors. These several sections are sup ported within anopen-work shell (1 having horizontal partitions formed with threadedopenings to accommodate the exterior threads on said sections, lateralflanges d of the lat* ter being designed to fit against said partitions.It will be observed that a small space is left between these varioussections composing the combining-tube and also between the upper andlower sections and the adjacent tubes of the injector. Thus I providefour openings to accommodate the spill and also to allow the oil orlubricant to be taken up through any one of these openings. As is wellknown in the art, in the operation of a steam-injector the amount ofwater in what is commonly called the vacuum-chamber d depends upon thesteam-pressure. Under certain pressure this chamber will be nearlyfilled with water, while under a heavier head of steam the chamber willbe practically empty of water by virtue of the increased vacuum. Henceit becomes necessary to provide various points at which the lubricantfed into the vacuum-chamber may be taken up by the jet in its passagethrough the combining-tube.

The lubricator B comprises a casing e, having a bottom c, formed with acentral tapered opening and an exteriorly-threaded boss 6 which isdesigned to be screwed into the upper end of a coupling 6 This couplingis formed with an approximately cylindrical portion 6 having anelongation e terminating in an exteriorly-threaded horizontal portion 6which is designed'to be screwed into the threaded nipple CH. Thecylindrical portion 9 has threaded extensions e",'in which to thetapered opening in the bottom 6.

two glass disks 6 are held by threaded rings a". In this waysight-openings are provided for constant inspection of the lubricant asit is discharged from casing e.

E is a regulator for controlling the outflow of the oil or lubricant. Itconsists of a rod f, extended vertically within casing e and having itslower end tapered at f to correspond A thread f on the exterior of thisrod engages an interiorly threaded ring f supported within casing e. Theupper end of this rod projects above the cover f and to a slotted head fsecured thereon, is pivoted the inner end of a pawl-like arm F. This armis slightly weighted at its outer end 9 and is designed to fit betweenteeth g, formed in a circular flange extending from the outer edge ofcover f. By raising this arm from engagement with these teeth the rod fcan be readily turned to regulate the discharge of the lubricant, andwhen the desired discharge is obtained the rod will be secured asagainst further turning by the lowering of the arm F into engagementwith said teeth. The lubricant is supplied through an opening 9 in coverf*.

In practice after the regulator of the lubricator has been adjusted tothe desired point (which is ascertainable by view through eithersightbpening) the lubricant will flow into the vacuum-chain ber of theinjector and there will be taken up by the jet in the combining-tube,the oil passing through any one of the several spill-openings formed inthe latter. It will be understood that in first starting the injectorthe valve 12 is unseated by the overflow-steam, which passes out throughthe overflow-opening a and that upon the same reaching the outsideatmosphere a vacuum or partial vacuum is created within the shell orcasing of the injector, whereupon the water is lifted, and that when thejet of combined steam and water is once established the valve 1) isdrawn to its seat, against which it is securely held under the weightedsupportingarm thereof. In the vacuum-chamber of the injector a vacuumranging between that represented by from ten to twelve inches of mercuryis always maintained. It is this that insures the discharge of thelubricant even under conditions that would render the lubricatorinoperative should the injector cease working. For instance, if thelubricator is feeding at the rate of, say, four drops to the minutewhile the injector is operating should such operation of the latter becut off the lubricant will cease to flow, for with its discharge-outletthrottled to this extent it will not discharge save when a partialvacuum exists in the chamber of the injector. With the discharge-outletof the lubricator thus throttled, making the outflow dependent upon theexistence of a partial vacuum in the injector, there is no danger ofpressure from the latter backing up into the lubricator and forcing theoil out of the latter, for the instant such back pressure should takeplace the automatic overflow-valve would at once open and relieve thesame.

I claim as my invention 1. The combination of a steam-injector and alubricator, said injector havingits combining-tube, located within itsvacuum-chamber, provided with spaced-apart lateral inlets throughout itslength, said lubricator having its discharge-outlet connected directwith said vacuum-chamber, and means for controlling the outlet from saidlubricator to the injector, as set forth.

2. The combination with a steam-injector havingits vac uum-chamberprovided with an interiorly-threaded nipple, of a lubricator comprisinga casing, having a lower central tapered opening, a rod mounted in saidcasing and having a lower tapered end fitting in said opening, means foradjusting said rod, and a coupling connecting said casingand saidnipple, said coupling having cylindrical cxtensions in whichsight-openings are formed, substantially as set forth.

3. The combination with a steam-injector having its vacuum-chamberprovided with an interiorly threaded nipple, of a lubricator comprisinga casing, a cylindrical boss projecting therefrom and provided with acentral bore having an upper tapered portion, a threaded rod mounted insaid casing and having a lower tapered end fitting in the taperedportion of said bore, means for effecting the adjustment of said rod, acoupling connecting said boss and said nipple, said coupling having anapproximately cylindrical chamber provided with lateralinteriorly-threaded extensions, glass disks located within saidextensions, and threaded plugs designed to retain said disks inposition, substantially as set forth.

4:. The herein-described lubricator comprising a casing, a cylindricalboss extendingfrom the lower end thereof provided with a central borehaving a tapered or flared portion, an interiorly-threaded ringsupported within said casing, a cover for said casing provided with aperipheral flange having teeth formed therein, said cover having aninlet hole or opening therein, a rod projected through said cover andhaving a threaded portion engaging said threaded ring, the lower end ofsaid rod being tapered to fit within the tapered or flared portion ofsaid bore, and an arm pivoted to the upper end of saidrod and having anouter weighted end designed to engage said teeth, substantially as setforth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

' JOHN DESMOND.

lVitnesses:

SEBASTIAN SANDER, GEORGE ROESNER.

